move pkg/mpeg4audio into pkg/codecs/mpeg4audio

2025-10-08 08:30:06 +08:00 · 2022-12-27 17:30:53 +01:00
parent 824fd75d18
commit 5f2ac979c5
16 changed files with 12 additions and 11 deletions
--- a/pkg/codecs/mpeg4audio/adts_test.go
+++ b/pkg/codecs/mpeg4audio/adts_test.go
@@ -0,0 +1,124 @@
+package mpeg4audio
+
+import (
+	"testing"
+
+	"github.com/stretchr/testify/require"
+)
+
+var casesADTS = []struct {
+	name string
+	byts []byte
+	pkts ADTSPackets
+}{
+	{
+		"single",
+		[]byte{0xff, 0xf1, 0x4c, 0x80, 0x1, 0x3f, 0xfc, 0xaa, 0xbb},
+		ADTSPackets{
+			{
+				Type:         ObjectTypeAACLC,
+				SampleRate:   48000,
+				ChannelCount: 2,
+				AU:           []byte{0xaa, 0xbb},
+			},
+		},
+	},
+	{
+		"multiple",
+		[]byte{
+			0xff, 0xf1, 0x50, 0x40, 0x1, 0x3f, 0xfc, 0xaa,
+			0xbb, 0xff, 0xf1, 0x4c, 0x80, 0x1, 0x3f, 0xfc,
+			0xcc, 0xdd,
+		},
+		ADTSPackets{
+			{
+				Type:         ObjectTypeAACLC,
+				SampleRate:   44100,
+				ChannelCount: 1,
+				AU:           []byte{0xaa, 0xbb},
+			},
+			{
+				Type:         ObjectTypeAACLC,
+				SampleRate:   48000,
+				ChannelCount: 2,
+				AU:           []byte{0xcc, 0xdd},
+			},
+		},
+	},
+}
+
+func TestADTSUnmarshal(t *testing.T) {
+	for _, ca := range casesADTS {
+		t.Run(ca.name, func(t *testing.T) {
+			var pkts ADTSPackets
+			err := pkts.Unmarshal(ca.byts)
+			require.NoError(t, err)
+			require.Equal(t, ca.pkts, pkts)
+		})
+	}
+}
+
+func TestADTSMarshal(t *testing.T) {
+	for _, ca := range casesADTS {
+		t.Run(ca.name, func(t *testing.T) {
+			byts, err := ca.pkts.Marshal()
+			require.NoError(t, err)
+			require.Equal(t, ca.byts, byts)
+		})
+	}
+}
+
+func TestADTSUnmarshalErrors(t *testing.T) {
+	for _, ca := range []struct {
+		name string
+		byts []byte
+		err  string
+	}{
+		{
+			"invalid length",
+			[]byte{0x01},
+			"invalid length",
+		},
+		{
+			"invalid syncword",
+			[]byte{0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08},
+			"invalid syncword",
+		},
+		{
+			"crc",
+			[]byte{0xff, 0xF0, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08},
+			"CRC is not supported",
+		},
+		{
+			"invalid audio type",
+			[]byte{0xff, 0xf1, 0x8c, 0x80, 0x1, 0x3f, 0xfc, 0xaa},
+			"unsupported audio type: 3",
+		},
+		{
+			"invalid sample rate index",
+			[]byte{0xff, 0xf1, 0x74, 0x80, 0x1, 0x3f, 0xfc, 0xaa},
+			"invalid sample rate index: 13",
+		},
+		{
+			"invalid channel configuration",
+			[]byte{0xff, 0xf1, 0x4c, 0x00, 0x1, 0x3f, 0xfc, 0xaa},
+			"invalid channel configuration: 0",
+		},
+		{
+			"multiple frame count",
+			[]byte{0xff, 0xf1, 0x4c, 0x80, 0x1, 0x3f, 0xfd, 0xaa},
+			"frame count greater than 1 is not supported",
+		},
+		{
+			"invalid frame length",
+			[]byte{0xff, 0xf1, 0x4c, 0x80, 0x1, 0x3f, 0xfc, 0xaa},
+			"invalid frame length",
+		},
+	} {
+		t.Run(ca.name, func(t *testing.T) {
+			var pkts ADTSPackets
+			err := pkts.Unmarshal(ca.byts)
+			require.EqualError(t, err, ca.err)
+		})
+	}
+}